From 1e6adbadc77517037cb0723df26510fb7a8457ec Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sat, 17 Dec 2022 08:10:45 +0000
Subject: [PATCH] [clang] llvm::Optional::value => operator*/operator->

std::optional::value() has undesired exception checking semantics and is
unavailable in older Xcode (see _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS). The
call sites block std::optional migration.

This makes `ninja check-clang` work in the absence of llvm::Optional::value.
---
 clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp         | 2 +-
 clang/lib/Analysis/FlowSensitive/DebugSupport.cpp               | 2 +-
 clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp | 2 +-
 clang/tools/libclang/CIndex.cpp                                 | 8 ++++----
 clang/unittests/Lex/HeaderSearchTest.cpp                        | 4 ++--
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp b/clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp
index b112059..2bdb1cd 100644
--- a/clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp
+++ b/clang/lib/Analysis/FlowSensitive/ControlFlowContext.cpp
@@ -36,7 +36,7 @@ buildStmtToBasicBlockMap(const CFG &Cfg) {
       if (!Stmt)
         continue;
 
-      StmtToBlock[Stmt.value().getStmt()] = Block;
+      StmtToBlock[Stmt->getStmt()] = Block;
     }
     if (const Stmt *TerminatorStmt = Block->getTerminatorStmt())
       StmtToBlock[TerminatorStmt] = Block;
diff --git a/clang/lib/Analysis/FlowSensitive/DebugSupport.cpp b/clang/lib/Analysis/FlowSensitive/DebugSupport.cpp
index 1e3ecf4..d4886f15 100644
--- a/clang/lib/Analysis/FlowSensitive/DebugSupport.cpp
+++ b/clang/lib/Analysis/FlowSensitive/DebugSupport.cpp
@@ -185,7 +185,7 @@ Constraints
 
     auto StatusString = clang::dataflow::debugString(Result.getStatus());
     auto Solution = Result.getSolution();
-    auto SolutionString = Solution ? "\n" + debugString(Solution.value()) : "";
+    auto SolutionString = Solution ? "\n" + debugString(*Solution) : "";
 
     return formatv(
         Template,
diff --git a/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp b/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
index 5c88568..ced016f 100644
--- a/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
+++ b/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
@@ -262,7 +262,7 @@ computeBlockInputState(const CFGBlock &Block, AnalysisContext &AC) {
     if (!MaybePredState)
       continue;
 
-    TypeErasedDataflowAnalysisState PredState = MaybePredState.value();
+    TypeErasedDataflowAnalysisState PredState = *MaybePredState;
     if (BuiltinTransferOpts) {
       if (const Stmt *PredTerminatorStmt = Pred->getTerminatorStmt()) {
         const StmtToEnvMapImpl StmtToEnv(AC.CFCtx, AC.BlockStates);
diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index f99275e..9958671 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -538,7 +538,7 @@ bool CursorVisitor::VisitChildren(CXCursor Cursor) {
             const Optional<bool> V = handleDeclForVisitation(*TL);
             if (!V)
               continue;
-            return V.value();
+            return *V;
           }
         } else if (VisitDeclContext(
                        CXXUnit->getASTContext().getTranslationUnitDecl()))
@@ -643,7 +643,7 @@ bool CursorVisitor::VisitDeclContext(DeclContext *DC) {
     const Optional<bool> V = handleDeclForVisitation(D);
     if (!V)
       continue;
-    return V.value();
+    return *V;
   }
   return false;
 }
@@ -677,7 +677,7 @@ Optional<bool> CursorVisitor::handleDeclForVisitation(const Decl *D) {
   const Optional<bool> V = shouldVisitCursor(Cursor);
   if (!V)
     return std::nullopt;
-  if (!V.value())
+  if (!*V)
     return false;
   if (Visit(Cursor, true))
     return true;
@@ -1076,7 +1076,7 @@ bool CursorVisitor::VisitObjCContainerDecl(ObjCContainerDecl *D) {
     const Optional<bool> &V = shouldVisitCursor(Cursor);
     if (!V)
       continue;
-    if (!V.value())
+    if (!*V)
       return false;
     if (Visit(Cursor, true))
       return true;
diff --git a/clang/unittests/Lex/HeaderSearchTest.cpp b/clang/unittests/Lex/HeaderSearchTest.cpp
index e67445f..b0f4221 100644
--- a/clang/unittests/Lex/HeaderSearchTest.cpp
+++ b/clang/unittests/Lex/HeaderSearchTest.cpp
@@ -214,7 +214,7 @@ TEST_F(HeaderSearchTest, HeaderFrameworkLookup) {
 
   EXPECT_TRUE(FoundFile.has_value());
   EXPECT_TRUE(IsFrameworkFound);
-  auto &FE = FoundFile.value();
+  auto &FE = *FoundFile;
   auto FI = Search.getExistingFileInfo(FE);
   EXPECT_TRUE(FI);
   EXPECT_TRUE(FI->IsValid);
@@ -284,7 +284,7 @@ TEST_F(HeaderSearchTest, HeaderMapFrameworkLookup) {
 
   EXPECT_TRUE(FoundFile.has_value());
   EXPECT_TRUE(IsMapped);
-  auto &FE = FoundFile.value();
+  auto &FE = *FoundFile;
   auto FI = Search.getExistingFileInfo(FE);
   EXPECT_TRUE(FI);
   EXPECT_TRUE(FI->IsValid);
-- 
2.7.4